I. Basic Model Interpretation 3386: 3/8-inch square Trimpot trimming potentiometer series P: Top adjustment style 1: Standard product specifications 503: Resistance code → 50×10³ = 50kΩ Suffix LF: Lead-free and RoHS compliant (full part number is often 3386P-1-503LF) II. Core Electrical Parameters Table Parameter | Specification Nominal Resistance | 50 kΩ Resistance Tolerance | ±10% Rated Power | 0.5 W (500 mW) Operating Voltage | 300 V Resistor Material | Cermet (Metal Ceramic) Temperature Coefficient | ±100 ppm/°C Adjustment Turns | Single-turn (electrical rotation 280°, mechanical 310°) Adjustment Life | 200 cycles (for infrequent calibration scenarios) III. Mechanical and Package Information Mounting Style: Through Hole, 3PC pins Dimensions: 9.53 × 9.53 × 4.83 mm (3/8-inch square) Adjustment Method: Top-slotted screw adjustment Operating Temperature: -55 ℃ ~ +125 ℃ Standard Packaging: Tube, 50 pieces per tube Flammability Rating: UL94 V-0 IV. Typical Applications PCB circuit precision calibration: Reference voltage trimming, sensor gain zeroing, power supply bias adjustment, instrument analog circuits. Additional Notes Domestic compatible models exist in the market (e.g., BOCHEN 3386P-1-503), with a temperature coefficient of ±250ppm/°C. Distinguish between original Bourns and alternative brands during procurement.